Lens magnification (linear) (m = v/u)

jee-mainjee-advancedneet-ug

m = v/u

What each symbol means

SymbolWhat it stands for
mLinear magnification (transverse)
uObject distance from optical centre (m)
vImage distance from optical centre (m)

When to use this

Standard JEE / NCERT assumptions unless stated (paraxial, thin lens, coherent YDSE sources, etc.).